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222 results for “temporal change”
Temporal pole responds to subtle changes in local thyroid hormone signaling
<p>To study thyroid hormone (TH) signaling in the human brain, we analyzed published microarray data sets of the temporal pole (Brodmann area 38) of 19 deceased donors. An index of TH signaling built on the expression of 19 well known TH-responsive genes in mouse brains (<b>T3S+</b>) varied from 0.92 to 1.1. After Factor analysis, <b>T3S</b><b>+</b> correlated independently with the expression of TH transporters (MCT8, LAT2), TH receptor (TR) beta and TR coregulators (CARM1, MED1, KAT2B, SRC2, SRC3, NCOR2a). Unexpectedly, no correlation was found between <b>T3S+</b> <i>vs</i> DIO2, DIO3, SRC1 or TRα. An unbiased systematic analysis of the entire transcriptome identified a set of 1,649 genes (set #1) with strong positive correlation with <b>T3S+</b> (r>0.75). Factor analysis of set #1 identified two sets of genes that correlated independently with <b>T3S+</b>, sets #2 (329 genes) and #3 (191 genes). When processed through the Molecular Signatures Data Base (MSigDB), both sets #2-3 were enriched with GO-sets related to synaptic transmission and metabolic processes. Ranking individual human brain donors according to their <b>T3S+</b> led us to identify 1,262 genes (set #4) with >1.3-fold higher expression in the top half. The analysis of the overlapped genes between sets #1 and #4 resulted in 769 genes (set #5), which have a very similar MSigDB signature as sets #2-3. In conclusion, gene expression in the human temporal pole can be assessed through <b>T3S+</b> and fluctuates with subtle variations in local TH signaling.</p>
Figure 4 in Temporal patterns of the calanoid copepod community in Veliko Jezero, an isolated marine lake (South Adriatic Sea): links to a larger-scale climate changes
Figure 4. Mean Margalef's species richness and Shannon–Wiener diversity index values per year; 90% confidence intervals are shown.
Figure 3 in Temporal patterns of the calanoid copepod community in Veliko Jezero, an isolated marine lake (South Adriatic Sea): links to a larger-scale climate changes
Figure 3. Seasonal and inter-annual patterns of total calanoid abundance (individuals per m3) (left scale and bars) and their contribution (%) to total mesozooplankton abundance (right scale and line) over the study period.
Figure 2 in Temporal patterns of the calanoid copepod community in Veliko Jezero, an isolated marine lake (South Adriatic Sea): links to a larger-scale climate changes
Figure 2. Seasonal and inter-annual patterns of hydrographic parameters (temperature and salinity) over the study period.
Fig. 3 in Aquatic Coleoptera In The Subtropical-Pampasic Ecotone (Argentina, Buenos Aires): Species Composition And Temporal Changes
Fig. 3. Percentage of species per family in each sampling station.
Fig. 12 in Aquatic Coleoptera In The Subtropical-Pampasic Ecotone (Argentina, Buenos Aires): Species Composition And Temporal Changes
Fig. 12. Cluster analysis of sampling stations according to: A—Taxonomic similarity
Supplementary material 1 from: Cerrato C, Rocchia E, Brunetti M, Bionda R, Bassano B, Provenzale A, Bonelli S, Viterbi R (2019) Butterfly distribution along altitudinal gradients: temporal changes over a short time period. In: Mazzocchi MG, Capotondi L, Freppaz M, Lugliè A, Campanaro A (Eds) Italian Long-Term Ecological Research for understanding ecosystem diversity and functioning. Case studies from aquatic, terrestrial and transitional domains. Nature Conservation 34: 91-118. https://doi.org/10.3897/natureconservation.34.30728
Supplementary data
Spatio-temporal impact of land use changes on nitrogen emissions in the Guangdong-Hong Kong-Macao Greater Bay Area
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Mismatches between birds' spatial and temporal dynamics reflect their delayed response to global changes
<p>Global changes alter the dynamics of biodiversity, and are forecasted to continue or worsen in the decades to come. Modelling approaches used to anticipate these impacts are mainly based on the equivalence between spatial and temporal response to environmental forcings, generally called space-for-time substitution. However, several processes are known to generate deviations between spatial and temporal responses, potentially undermining the prediction based on space-for-time substitution.</p> <p>We here used high-resolution data from the french breeding bird survey to quantify and map the deviation between spatial and temporal patterns of bird abundances resulting from the dynamics of 124 species monitored in 2133 sites between 2001 and 2012. Using independent empirical data, we then tested specific predictions linked to the determinants (anthropogenic activities) and processes (lagged responses to environmental changes) potentially generating these deviations. We found that deviations between spatial and temporal patterns of abundances were particularly structured in space for bird communities. Following our predictions, these space–time deviations were positively correlated with the human influence on ecosystems, and linked with colonization–extinction ratios and community completeness, two markers of ongoing delayed responses to environmental changes. Our results suggest that the deviations between spatial and temporal patterns are related to recent anthropogenic environmental changes and disequilibrium responses to these changes. Investigating deviations between spatial and temporal patterns of biodiversity might open promising perspectives for a formal quantification of disequilibrium state of biodiversity at large spatial scale.</p>
Data from: Reconstructing biological invasions using public surveys: a new approach to retrospectively assess spatio-temporal changes in invasive spread
[No abstract entered]
Data from: Temporal changes in genetic variability in three bumblebee species from Rio Grande do Sul, South Brazil
[No abstract entered]
Supplementary material 2 from: Standovár T, Horváth S, Aszalós R (2017) Temporal changes in vegetation of a virgin beech woodland remnant: stand-scale stability with intensive fine-scale dynamics governed by stand dynamic events. Nature Conservation 17: 35-56. https://doi.org/10.3897/natureconservation.17.12251
Map showing canopy trees in the study area. :
Supplementary material 1 from: Standovár T, Horváth S, Aszalós R (2017) Temporal changes in vegetation of a virgin beech woodland remnant: stand-scale stability with intensive fine-scale dynamics governed by stand dynamic events. Nature Conservation 17: 35-56. https://doi.org/10.3897/natureconservation.17.12251
Map showing the position of sampling plots in 1996 and 2013 :
Data from: Spatio-temporal changes of Svalbard lagoon systems in the post-Little-Ice-Age period (1936–2021)
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Temporal changes of the stress regime in the seismogenic zone of the 2015 Gorkha Earthquake
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Long-term environmental changes in the Canadian boreal zone: Synthesizing temporal trends from lake sediment archives to inform future sustainability
<ul> <li>Lead (Pb) concentration and chlorophyll <em>a</em> data</li> </ul> <p>Original publication: Gros, M., Zilkey D. R., Griffiths, K. T., Pham, J., MacKeigan, P. W., Taranu, Z. E., Aulard, C., Baud, A., Garner, R. E., Ghanbari, H., Lachapelle, M., Monchamp, M-È, Paquette, C., Antoniades, D., Francus, P., Smol, J. P. & Gregory-Eaves, I. (2023). Long-term environmental changes in the Canadian boreal zone: Synthesizing temporal trends from lake sediment archives to inform future sustainability. <em>Environmental Reviews</em>, <em>31</em>(3). https://doi.org/10.1139/er-2023-0006.</p>
The effect of temporal changes in stamen position on reproductive success in flowers with many stamens: experimental manipulations of stamen position
<p class="MsoNormal"><span><strong>Premise of the study</strong>: </span><span>Male and female reproductive success is enhanced (increased outcrossing and seed production) by stamen movement</span><span> in species that have few stamens per flower.</span><span> Does such enhancement also occur in species that have many stamens per flower?</span></p> <p class="MsoNormal"><span><strong>Methods</strong>: </span><span>We examined the effects of stamen movement on male and female reproductive success in <em>Anemone flaccida</em>, which has </span><span>many stamens</span><span> per flower. We measured stamen movement, including temporal changes in anther-stigma and anther-anther distances. We controlled stamen movement experimentally.</span></p> <p class="MsoNormal"><span><strong>Key results</strong>: </span><span>The anthers moved horizontally away from the stigmas with increasing flower age, resulting in reduction in female-male interference. The dehisced anthers tended to move further away from the stigmas while the undehisced or dehiscing anthers remained nearer to them. The number of anthers touched per flower visit was higher in flowers whose stamens were fixed in the pre-movement position than in flowers whose stamens were fixed in the post-movement position or in flowers that were not manipulated. Thus, this position may promote male reproductive success. Seed production was lower for the untreated flowers than for the post-movement position flowers, suggesting that the post-movement stamen position is advantageous and stamen movement is suboptimal for female reproductive success.</span></p> <p class="MsoNormal"><span><strong>Conclusions</strong>: </span><span>Stamen movement promotes male reproductive success in the early flowering stage and female reproductive success in the late flowering stage. In species having many stamens per flower, female-male interference can be reduced, but not eliminated, by stamen movement due to the conflict between female and male reproductive successes.</span></p>
Temporal Patterns of Diet and the Changes in Body Composition and Blood Pressure
ClinicalTrials.gov study NCT03828812. IPD Sharing: UNDECIDED. Countries: 0. Publications: 1.
Temporal changes in predator density are linked to shifts in prey behavior, mortality, and abundance in the field
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Data from: Temporal changes in genetic variability in three bumblebee species from Rio Grande do Sul, South Brazil
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Allen Brain Atlas
Allen Brain Atlas is an Allen Institute collection of brain map atlases, datasets, APIs, and analysis tools covering mouse, human, and non-human primate brain resources.
Annotated Behaviour and Observability Dataset (ABODe)
ABODe is a University of Edinburgh DataShare dataset for behavior classification in group-housed mice using home-cage video, identities, bounding boxes, ground-plate positions, and annotator labels.
DANDI Archive for NWB datasets
DANDI is a BRAIN Initiative archive for publishing and sharing neurophysiology data, including electrophysiology, optophysiology, and behavioral data packaged as NWB and related standards.
International Brain Laboratory public data
The International Brain Laboratory public data releases expose standardized mouse decision-making experiments, including Neuropixels recordings, widefield calcium imaging, behavior, and session metadata accessed through the ONE API.
OpenNeuro
OpenNeuro is a free, open platform for sharing neuroimaging datasets, with public search, dataset pages, and download paths for web, S3, DataLad, and the OpenNeuro CLI.